Synthetic Diet Increases Blood Protein in the Silkworm Bombyx mori

Changing dietary conditions of the silkworm Bombyx mori from synthetic diet to mulberry leaf, the amount of most amino acids (particularly lysine) in the blood protein was remarkably increased. This tendency was found to be already determined before the 3rd instar for some amino acids. It is also suggested that the increase of blood protein may be due to some important role taken by chlorogenic acid or oleic acid added to the synthetic diet.